marble engraving machine 1.900x1500mm 2.3kw constant power water cooling spindle 3.all square guide rail,stepper 4. ... pinion,Z:ballscrew driveMax. speed 5m/minSpindle 3kw constant power water-cooling spindle, 24,000rpmDrive motors stepperWorking delicacy 0. ... XYZ axis, 4.DSP/Mach3 Controller,5.3kw constant power water-cooling spindle,6.Artengraver2009/ uncancamV8/ Type3/Artcam software, ...